PR32858 ld segfault on fuzzed object

We missed one place where it is necessary to check for empty groups.

	PR 32858
	* elflink.c (elf_gc_sweep): Protect against empty group.

diff --git a/bfd/elflink.c b/bfd/elflink.c
index a76e8e38da728b41c47dfe89e1b97cf99a7bdb7b..549b7b7dd92ab94c2027b37aca0acc1f45de8428 100644 (file)
--- a/bfd/elflink.c
+++ b/bfd/elflink.c
@@ -14408,7 +14408,8 @@ elf_gc_sweep (bfd *abfd, struct bfd_link_info *info)
          if (o->flags & SEC_GROUP)
            {
              asection *first = elf_next_in_group (o);
-             o->gc_mark = first->gc_mark;
+             if (first != NULL)
+               o->gc_mark = first->gc_mark;
            }
 
          if (o->gc_mark)